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<table width="100%" summary="page for cabbages"><tr><td>cabbages</td><td align="right">R Documentation</td></tr></table>

<h2>
Data from a cabbage field trial
</h2>

<h3>Description</h3>


<p>The <code>cabbages</code> data set has 60 observations and 4 variables
</p>


<h3>Usage</h3>

<pre>
cabbages
</pre>


<h3>Format</h3>


<p>This data frame contains the following columns:
</p>

<dl>
<dt><code>Cult</code></dt><dd>
<p>Factor giving the cultivar of the cabbage, two levels: <code>c39</code>
and <code>c52</code>.
</p>
</dd>
<dt><code>Date</code></dt><dd>
<p>Factor specifying one of three planting dates: <code>d16</code>,
<code>d20</code> or <code>d21</code>.
</p>
</dd>
<dt><code>HeadWt</code></dt><dd>
<p>Weight of the cabbage head, presumably in kg.
</p>
</dd>
<dt><code>VitC</code></dt><dd>
<p>Ascorbic acid content, in undefined units.
</p>
</dd>
</dl>



<h3>Source</h3>


<p>Rawlings, J. O. (1988)
<EM>Applied Regression Analysis: A Research Tool.</EM>
Wadsworth and Brooks/Cole.  Example 8.4, page 219.
(Rawlings cites the original source as the files of the late
Dr Gertrude M Cox.)
</p>


<h3>References</h3>


<p>Venables, W. N. and Ripley, B. D. (1999)
<EM>Modern Applied Statistics with S-PLUS.</EM> Third
Edition. Springer.
</p>


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